Check the listing for details. Protec P6162 DPF Diesel Particulate Filter Cleaning Liquid. Condition: New, Made in Germany. Listed at 133.00 USD. The particle filter cleaning fluid dissolves and removes all soot deposits and residues from the particle filter. The cleaning liquid cleans delicately and is perfectly usable on all aluminum, magnesium, zinc and cadmium components. The product is perfectly compatible with the latest generation particulate filters. 1. Remove the particulate filter and seal an opening in the filter with adhesive tape. 3. Leave the product to act for approximately 10 hours, shaking occasionally. 4. After cleaning, rinse the filter thoroughly with clean warm water. 5. Refit the particulate filter, add DPF Super Clean and carry out a test drive for at least 20 minutes. If regeneration does not start automatically, guided by the engine electronics, start it with one approximately 3-5 liters depending on the siz.